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14
Medalist 1640 and 2140 Product Manual, January 1996
1.11 Reliability
The Medalist 1640A and 2140A drives provide error correction code,
ECC, for both the data field and the header ID field. Data field ECC uses
a three-way interleaved Reed-Solomon code with a redundancy of 6 ECC
bytes per interleave and 18 bytes of ECC redundancy total. The maxi-
mum correction length is 65 bits for a single-error burst, or 17 bits each
for three-error burst.
The read error rates shown in the table below are measured with
automatic retries and data correction with ECC enabled. Mean time
between failures (MTBF) is measured with nominal power at sea level
and an ambient temperature of 25 ° C.
Nonrecoverable read errors
Seek errors
Contact Start and stops (CSS)
MTBF
Service life
1.12 Agency listings
This drive is listed by agencies as follows:
• Recognized in accordance with UL478 and UL1950
• Certified to CSA C22.2 No. 220-M1986 and CSA C22.2 No. 950-
M1989
• Certified to VDE 0806/05.90 and EN 60950/1.88 as tested by TUV
• Complies with the requirements of the Electromagnetic Compatibility
Directive 89/336/EEC as amended by Directive 92/31/EEC of 28 April
1992 by conforming to EN55022 Class B (emissions) and EN50082-
1:1982 (immunity RFI, ESD, EFT).
1.13 FCC verification
The Medalist family ATA interface drives are intended to be contained
solely within a personal computer or similar enclosure (not attached to
an external device). As such, a drive is considered to be a subassembly
even when individually marketed to the customer. As a subassembly, no
Federal Communications Commission authorization, verification or cer-
tification of the device is required.
7. CSS is measured under ambient conditions.
13
1 per 10
bits transferred
7
1 per 10
physical seeks
7
20,000
500,000 power-on hours
5 years
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